Device for cooliha systems for ihterktal



I V. MIONSON. TEMPERATURE INDICATING DEVICE FOR COOLING SYSTEMS FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED OCT. I? I916. I

Patented June 10, i919.

E W orrica.

LOUIS V. ARQNSON, OF NEWARK, NEW JERSEY.

TE NiPERATURE-INDICATING DEVICE FOR COOLING SYSTEMS FOR INTERNAL- COMBUSTION ENGINES.

incense.

Specification of Letters Patent. Patgmted June 10, 1919.

Application filed October 17, 1916. Serial No. 125,197.

T 0 all whom it may concern Be it known that I, LOUIS V. AnoXsoN, a

citizenbf the United States, and a resident of Xewarkjui the county of Essex and State dicating means for the water cooling systerns of internal combustion engines, espe clally as employed in connection with automobiles, and'more particularly to means of thischaracter in which the actual'temperature condition of the cooling water is to be .indicated; It will be appreciated that, gener'ally, in order to reach the cooling water, the heat responsive element will be so lorated with respect to the tank space of the automobile radiator as to make it undesirable to disturb its position when removing the cap, which closes the filling opening of the tank. The invention, therefore,has for its. object to so mount the temperature ,indicating means, with heat responsive eleientlyremovedas a whole to allow of rement extending to the cooling water, that the same'may "retain its position relatively to the tank while the said cap is unscrewed,- whereupon the said device may be convenplenishing' the water, and then again replaced without difficulty. A further ob ect of the invention consistsin means for con In the accompanying drawings, whichillustrate the invention-.

Figure 1 is a side elevation of the in] proved; temperature indicating device, 101 cated in the upper portion of an automobile radiator, the latter being shown in section.

Fig. 2 is a front elevation of the temperature indicating device and radiator cap. Fig. 3 is a vertical section therethrough taken on the line 33, Fig. 2. Fig. 4 is a sectional view i modification.

Similar characters of reference designate corresponding parts throughout the several news. v

Referring to the drawings, 10 designates the .radiator, or rather the upper tank portion thereof, which is generally provldedsisting of a compound tube 13 consisting llustrating a with a cylindrical filling opening 11- through which the water of the radiator may be replenished, saidopening being normally ture indicating device, which maybe of the metallic, vapor, liquid or similar type, and is herein shown, by way of example, as conin partof glass and in part of metal, said, tube being adapted to retain a suitable 1iquid which undergoes a change in color over -acertain range of temperature, reverting to the original color when the original temperature is restored. No claim, however, is made to the compound tube feature in the I present application, the same being claimed in a co-pending application, Serial No. 126196, filed by me even date herewith.

" The outer portion of tube 13 visible above the cap 12 consists of a glass tube 11 closed at the top and mountedin a suitable protecting frame '15. At its lower and open end, tube lat abuts a flexible tube 14 of metal or other suitable. material; or, preferably, is screwed over the endof same, the junction being sealed as by means of a short piece of rubber tubing 16 surrounding said junction, and about which is located a short length of metal tubing or bushing 17, externally threaded. The lower end of tube 17 is closed by means of solder or cement so that a rigid and substantial joint is provided, the portion of tube 13 beyond the bushing 17 being of a sufficiently flexible character for the purpose hereinafter set forth. The upper end of bushing 17 is screwed into the frame 15 or rather aneularged extension or base 18 thereof, whose lower face is designed to rest upon the top of cap 12 or upon an interposed washer 18.

In order to allow of relative motion between said cap and the frame 15 with contained temperature responsive device, as in unscrewing the cap when desiring ,to replenish thewater in the tank, the underface,

' submerged,

17. When it is desired to. unscrew the cap 12,-it is necessary merely to raise theerilarg'ement 18-t0 disengage its pin 19 from said cap and rotate the latter, whereupon the entire temperature indicator with the cap may be removed from thetank 10 and free access had thereto through the filling opening 11. The. extending portion of the he t responsive element may then be returned with the cap to its proper position in the tank, for example, 'as. shown in ig. 1, whereinthe end of same is indicated as placed directly in the path 'of .theheated "water issuing from the return pipe 23'; or

when this is not possible, it may be located on the bottom of the tank so as to extend well below the normal water level and be The unscrewing of the cap, when effected as afdresaid, will, therefore, not disturb the position of said heat responsive element in the tank, nor ause injury to the same.

In Fig. i, a modification is illustrated, the

base 18-being provided with downwardly extending pins 25 adapted to engage cam grooves 26 0f 'a lever 27 mounted between the said base'and the top of radiator cap 12 about the bushing 17. To regulate the tension between the same, a rubber washer 28 incased in a metal washer 29 is mounted within said cap upon the bushing 17 bearing against the underface ot' the cap and held into position by suitable lock nuts 30. By correspondingly shifting the lever 27, the base 18may be loosened from ortightened to the said 'radiator cap, as desired.

I claim': v I

1. The'combination with the coolingsystem, of anyinternal combustion engine, em

bodying a radiator and a cap therefor, and] a'heat responsive element having, a portion located in the cooling medium for said system';of meansoutside the cap oi said radiator having means to -normally lock said out-side means thereto, said means being yieldably movable with. the heat responsive element in respectto the cap and permitting of the same being unlocked as a whole team said cap, whereupon. the latter may heiretatedrelativeiy to the former,

E2. The combination withthe .eooli-ng system of an internal c tamaran engine, em-' bodying a radiator and,aeaptherefor, and

"END

a heat responsive element a portion locate'd'in the cooling medium for said systom; of yielding means within the radiator cap'to hold the heat responsive element to saidcap; and means outside of the ca of said radiator to normally look said element thereto, said outside neans being movable with the heat responsive element in respect unlocked as a 'whole from said oap,'whereupon the latter may be rotated relatively to the former.

The combination with the cooling system of an internal combustion engine,'em-

A to the cap and permitting of the same being bodying a radiator, and a cap therefor proa tubular memberand threaded bushing about said member; of alpin movable with 7 said h'eatresponsive element, "adapted to litthe socket of'thef'said radiator cap; a spring mount-ed about said bushing and bearing [against the underfarce or" thecap and a nut at said bushing to place thespring-lun-G 'der the desired tension.

Signed atNewark in the county of Essex: and State of New Jersey this. 13th day. 0% October, Ad), 1916. a i LOU-IS V. ARONSON. 

